Precision Devices PD.186/2 Speaker Komponen 18" / PD186/2 / PD 186 / 2

* Made in England * Heavy-duty cast aluminium chassis for increased rigidity. Double suspension system. Effective transducer in a variety of versatile applications. Suitable for horn loaded or reflex designs. *2.83V. Half space response measured in a 975 Litre sealed enclosure. *1 Power compression is the reduction of sensitivity at the specified power. Higher power ratings do not necessarily give a proportionate increase in SPL therefore the maximum SPL of the driver may significantly exceed that of other manufacturers with high power ratings. 1. AES Standard (40 to 400 Hz) Program 1400 Watts. 2. AES Recommended Practice. 3. Thiele - Small Parameters follow a 700 Watt preconditioning period. Please note that frequency response measurements are supplied for comparison purposes only and are not a measure of the low frequency performance which may be achievable in a fully optimised system. SPECIFICATIONS Nominal Diameter 460 mm / 18 nVoice Coil Diameter 127 mm / 5.0 nNominal Impedance 8 Ω Available In 4 Ω/ 8 Ω/ 16 Ω Power Rating 700 w (A.E.S.) Peak Power (6dB Crest Factor) 2800 w (A.E.S.) Sensitivity (1w / 1m) 95 dB Frequency Range 30 Hz - 2 kHz Recommended Enclosure Volume 100 - 350 Litres Resonance 34.18 Hz Voice Coil Winding Depth 25 mm / 0.98 nMagnet Gap Depth 9 mm / 0.35 nFlux Density Tesla 0.95 Tesla Magnet Material Ceramic Voice Coil Material Copper Former Material Glass Fibre Dust Dome Material Paper Suspension Material Dual Fabric Cone Surround Material Paper / Fabric THIELE SMALL PARAMETERS Fs 34.18 Hz Re 6.19 Ω Qms 10.77 Qes 0.55 Qts 0.52 Le 1.95 mh L2 3.06 mh R2 8.07 Ω Vas 192.15 litres Mms 203.93 g Sd 1134.11 cm2 Cms 106.67 µm/N BL 22.18 T/m Xmax 10.5 mm Vd 1.2 litres Ref. Efficiency 2.05% MOUNTING AND SHIPPING INFORMATION Overall Diameter 474 mm Width Across Flats 459 mm Flange Height 14.5 mm Depth (Excl. Flange) 173 mm Magnet Diameter 220 mm Chassis Shoulder Diameter 414.5 mm Outer Bolt Circle 6 * M8 on 455mm PCD Inner Bolt Circle N/A